This object controls whether the local pysnmp-based SNMP engine will respond to discovery requests from SNMP managers it doesn't already recognize, functioning as a switch between allowing or refusing to be found by unknown clients. An administrator sets this to discoverable so new monitoring tools can locate and start communicating with the agent, or to notDiscoverable to restrict the engine to only clients it already has an established relationship with. For example, setting this object to notDiscoverable(0) on a security-sensitive agent prevents it from replying to discovery probes from SNMP managers it hasn't already been configured to trust.